//example_10_2:stock00.cpp --implementing the Stock class
//version 00
#include <iostream>
#include "stock00.h"

void Stock::acquire(const std::string &co, long n, double pr)
{
	company = co;
	if(n < 0)
	{
		std::cout << "Number of shares can't be negative; "
		          << company << "shares set to 0.\n";
	    shares = 0;			  
	}
	else
	{
		shares = n;
	}
	share_val = pr;
	set_tot();
}

void Stock::buy(long num, double price)
{
	if(num < 0)
	{
		std::cout << "Number of shares purchased canpt be negative."
		          << "Transaction is aborted.\n";
	}
	else
	{
		shares += num;
		share_val = price;
		set_tot();
	}
}

void Stock::sell(long num, double price)
{
	using std::cout;
	if(num < 0)
	{
		cout << "Number of shares sold can't be negative. "
			 << "Transaction is aborted.\n";
	}
	else if(num > shares)
	{
		cout << "You can't sell more than you have! "
			 << "Transaction is aborted.\n";
	}
	else
	{
		shares -= num;
		share_val = price;
		set_tot();
	}
}

void Stock::update(double price)
{
	share_val = price;
	set_tot();
}

void Stock::show()
{
	std::cout << "Comany: " << company
		      << " Shares: " << shares << '\n'
			  << " Share Price: $" << share_val
			  << " Total Worth: $" << total_val << '\n';
}
